./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:59:40,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:59:40,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:59:40,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:59:40,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:59:40,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:59:40,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:59:40,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:59:40,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:59:40,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:59:40,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:59:40,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:59:40,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:59:40,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:59:40,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:59:40,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:59:40,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:59:40,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:59:40,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:59:40,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:59:40,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:59:40,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:59:40,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:59:40,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:59:40,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:59:40,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:59:40,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:59:40,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:59:40,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:59:40,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:59:40,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:59:40,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:59:40,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:59:40,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:59:40,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:59:40,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:59:40,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:59:40,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:59:40,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:59:40,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:59:40,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:59:40,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 01:59:40,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:59:40,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:59:40,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:59:40,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:59:40,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:59:40,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:59:40,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:59:40,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:59:40,918 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:59:40,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:59:40,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:59:40,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 01:59:40,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:59:40,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:59:40,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:59:40,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:59:40,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:59:40,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:59:40,921 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 01:59:40,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:59:40,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:59:40,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:59:40,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:59:40,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:59:40,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:59:40,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:59:40,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:59:40,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:59:40,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:59:40,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:59:40,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:59:40,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:59:40,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:59:40,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:59:40,924 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:59:40,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:59:40,925 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-11-23 01:59:41,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:59:41,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:59:41,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:59:41,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:59:41,218 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:59:41,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-23 01:59:44,441 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:59:44,807 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:59:44,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-23 01:59:44,832 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/data/1d019df5d/ce1b84be0a3b461fbf4ed363e7c19e08/FLAG37373a142 [2022-11-23 01:59:44,852 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/data/1d019df5d/ce1b84be0a3b461fbf4ed363e7c19e08 [2022-11-23 01:59:44,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:59:44,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:59:44,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:59:44,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:59:44,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:59:44,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:44" (1/1) ... [2022-11-23 01:59:44,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123e8b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:44, skipping insertion in model container [2022-11-23 01:59:44,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:44" (1/1) ... [2022-11-23 01:59:44,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:59:44,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:59:45,113 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-23 01:59:45,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:59:45,588 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:59:45,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-23 01:59:45,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:59:45,788 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:59:45,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45 WrapperNode [2022-11-23 01:59:45,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:59:45,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:59:45,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:59:45,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:59:45,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,852 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-11-23 01:59:45,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:59:45,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:59:45,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:59:45,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:59:45,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:59:45,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:59:45,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:59:45,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:59:45,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (1/1) ... [2022-11-23 01:59:45,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:59:45,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:45,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:59:45,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:59:45,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:59:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:59:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 01:59:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:59:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 01:59:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:59:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-11-23 01:59:45,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-11-23 01:59:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:59:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:59:45,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:59:45,986 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 01:59:46,122 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:59:46,125 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:59:46,367 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:59:46,374 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:59:46,375 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 01:59:46,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:46 BoogieIcfgContainer [2022-11-23 01:59:46,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:59:46,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:59:46,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:59:46,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:59:46,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:44" (1/3) ... [2022-11-23 01:59:46,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395e3fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:46, skipping insertion in model container [2022-11-23 01:59:46,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:45" (2/3) ... [2022-11-23 01:59:46,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395e3fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:46, skipping insertion in model container [2022-11-23 01:59:46,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:46" (3/3) ... [2022-11-23 01:59:46,386 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-11-23 01:59:46,395 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 01:59:46,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:59:46,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 01:59:46,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 01:59:46,475 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 01:59:46,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 107 transitions, 222 flow [2022-11-23 01:59:46,564 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2022-11-23 01:59:46,565 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 01:59:46,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 7/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-23 01:59:46,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 107 transitions, 222 flow [2022-11-23 01:59:46,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 85 transitions, 173 flow [2022-11-23 01:59:46,579 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 01:59:46,595 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 85 transitions, 173 flow [2022-11-23 01:59:46,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 85 transitions, 173 flow [2022-11-23 01:59:46,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 85 transitions, 173 flow [2022-11-23 01:59:46,625 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-11-23 01:59:46,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:59:46,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 5/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-23 01:59:46,628 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2022-11-23 01:59:49,345 INFO L134 LiptonReduction]: Checked pairs total: 3200 [2022-11-23 01:59:49,345 INFO L136 LiptonReduction]: Total number of compositions: 75 [2022-11-23 01:59:49,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:59:49,379 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@334f46fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:59:49,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-23 01:59:49,384 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-11-23 01:59:49,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:59:49,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:49,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 01:59:49,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 360363020, now seen corresponding path program 1 times [2022-11-23 01:59:49,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:49,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850659673] [2022-11-23 01:59:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:49,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:49,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850659673] [2022-11-23 01:59:49,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850659673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:49,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:49,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 01:59:49,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717340319] [2022-11-23 01:59:49,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:49,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:49,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 182 [2022-11-23 01:59:49,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:49,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:49,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 182 [2022-11-23 01:59:49,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:49,850 INFO L130 PetriNetUnfolder]: 125/256 cut-off events. [2022-11-23 01:59:49,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:59:49,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 256 events. 125/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1024 event pairs, 42 based on Foata normal form. 5/161 useless extension candidates. Maximal degree in co-relation 502. Up to 209 conditions per place. [2022-11-23 01:59:49,855 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2022-11-23 01:59:49,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 133 flow [2022-11-23 01:59:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2022-11-23 01:59:49,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5659340659340659 [2022-11-23 01:59:49,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2022-11-23 01:59:49,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2022-11-23 01:59:49,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:49,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2022-11-23 01:59:49,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:49,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:49,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:49,900 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 309 transitions. [2022-11-23 01:59:49,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 133 flow [2022-11-23 01:59:49,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:49,906 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 73 flow [2022-11-23 01:59:49,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2022-11-23 01:59:49,914 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2022-11-23 01:59:49,914 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 73 flow [2022-11-23 01:59:49,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:49,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:49,915 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:49,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:59:49,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1583479188, now seen corresponding path program 1 times [2022-11-23 01:59:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:49,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356263092] [2022-11-23 01:59:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:50,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:50,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356263092] [2022-11-23 01:59:50,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356263092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:50,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:50,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117014436] [2022-11-23 01:59:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:50,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:50,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2022-11-23 01:59:50,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:50,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2022-11-23 01:59:50,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:50,205 INFO L130 PetriNetUnfolder]: 152/314 cut-off events. [2022-11-23 01:59:50,205 INFO L131 PetriNetUnfolder]: For 11/17 co-relation queries the response was YES. [2022-11-23 01:59:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 314 events. 152/314 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1458 event pairs, 64 based on Foata normal form. 1/211 useless extension candidates. Maximal degree in co-relation 705. Up to 172 conditions per place. [2022-11-23 01:59:50,209 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-11-23 01:59:50,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 179 flow [2022-11-23 01:59:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2022-11-23 01:59:50,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5787545787545788 [2022-11-23 01:59:50,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2022-11-23 01:59:50,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2022-11-23 01:59:50,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:50,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2022-11-23 01:59:50,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,216 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 73 flow. Second operand 3 states and 316 transitions. [2022-11-23 01:59:50,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 179 flow [2022-11-23 01:59:50,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:50,219 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 86 flow [2022-11-23 01:59:50,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-11-23 01:59:50,220 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2022-11-23 01:59:50,220 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 86 flow [2022-11-23 01:59:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:50,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:59:50,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1793352878, now seen corresponding path program 1 times [2022-11-23 01:59:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:50,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318952160] [2022-11-23 01:59:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:50,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:50,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318952160] [2022-11-23 01:59:50,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318952160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:50,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:50,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338164456] [2022-11-23 01:59:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:50,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:50,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:50,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:50,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:50,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-11-23 01:59:50,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:50,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-11-23 01:59:50,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:50,465 INFO L130 PetriNetUnfolder]: 200/461 cut-off events. [2022-11-23 01:59:50,465 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-23 01:59:50,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 461 events. 200/461 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2224 event pairs, 106 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 1081. Up to 269 conditions per place. [2022-11-23 01:59:50,475 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 36 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-11-23 01:59:50,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 218 flow [2022-11-23 01:59:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2022-11-23 01:59:50,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5732600732600732 [2022-11-23 01:59:50,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2022-11-23 01:59:50,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2022-11-23 01:59:50,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:50,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2022-11-23 01:59:50,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,484 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 86 flow. Second operand 3 states and 313 transitions. [2022-11-23 01:59:50,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 218 flow [2022-11-23 01:59:50,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:50,489 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 100 flow [2022-11-23 01:59:50,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2022-11-23 01:59:50,491 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2022-11-23 01:59:50,491 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 100 flow [2022-11-23 01:59:50,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:50,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:50,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:59:50,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1305053553, now seen corresponding path program 1 times [2022-11-23 01:59:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:50,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023356259] [2022-11-23 01:59:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:50,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:50,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:50,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023356259] [2022-11-23 01:59:50,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023356259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:50,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:50,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:59:50,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433843558] [2022-11-23 01:59:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:50,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:50,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-11-23 01:59:50,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:50,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-11-23 01:59:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:50,745 INFO L130 PetriNetUnfolder]: 66/227 cut-off events. [2022-11-23 01:59:50,745 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-23 01:59:50,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 227 events. 66/227 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 982 event pairs, 21 based on Foata normal form. 29/222 useless extension candidates. Maximal degree in co-relation 587. Up to 119 conditions per place. [2022-11-23 01:59:50,751 INFO L137 encePairwiseOnDemand]: 174/182 looper letters, 17 selfloop transitions, 10 changer transitions 0/31 dead transitions. [2022-11-23 01:59:50,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 171 flow [2022-11-23 01:59:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-11-23 01:59:50,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2022-11-23 01:59:50,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-11-23 01:59:50,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-11-23 01:59:50,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:50,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-11-23 01:59:50,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,762 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 100 flow. Second operand 3 states and 302 transitions. [2022-11-23 01:59:50,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 171 flow [2022-11-23 01:59:50,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:50,765 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 118 flow [2022-11-23 01:59:50,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2022-11-23 01:59:50,767 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2022-11-23 01:59:50,767 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 118 flow [2022-11-23 01:59:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:50,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:50,768 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:59:50,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1305060997, now seen corresponding path program 1 times [2022-11-23 01:59:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:50,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657078077] [2022-11-23 01:59:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:50,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657078077] [2022-11-23 01:59:50,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657078077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496567669] [2022-11-23 01:59:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:50,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:50,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:50,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:50,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:59:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:51,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 01:59:51,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:51,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:59:51,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496567669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:51,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:59:51,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-23 01:59:51,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694703903] [2022-11-23 01:59:51,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:51,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:59:51,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:51,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:59:51,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:59:51,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 182 [2022-11-23 01:59:51,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:51,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:51,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 182 [2022-11-23 01:59:51,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:51,324 INFO L130 PetriNetUnfolder]: 67/208 cut-off events. [2022-11-23 01:59:51,325 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-11-23 01:59:51,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 208 events. 67/208 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 772 event pairs, 29 based on Foata normal form. 10/194 useless extension candidates. Maximal degree in co-relation 618. Up to 144 conditions per place. [2022-11-23 01:59:51,327 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 37 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2022-11-23 01:59:51,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 272 flow [2022-11-23 01:59:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:59:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 01:59:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2022-11-23 01:59:51,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5183150183150184 [2022-11-23 01:59:51,329 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2022-11-23 01:59:51,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2022-11-23 01:59:51,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:51,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2022-11-23 01:59:51,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:51,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:51,335 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:51,335 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 118 flow. Second operand 6 states and 566 transitions. [2022-11-23 01:59:51,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 272 flow [2022-11-23 01:59:51,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:51,337 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 127 flow [2022-11-23 01:59:51,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-11-23 01:59:51,338 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2022-11-23 01:59:51,339 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 127 flow [2022-11-23 01:59:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:51,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:51,339 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:51,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:51,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:51,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1305060995, now seen corresponding path program 1 times [2022-11-23 01:59:51,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:51,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968458155] [2022-11-23 01:59:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:51,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:51,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968458155] [2022-11-23 01:59:51,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968458155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:51,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396670744] [2022-11-23 01:59:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:51,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:51,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:51,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:51,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:59:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:51,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 01:59:51,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:51,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:51,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396670744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:51,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:51,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-23 01:59:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810236592] [2022-11-23 01:59:51,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:59:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:59:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:59:51,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-11-23 01:59:51,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 127 flow. Second operand has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:51,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:51,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-11-23 01:59:51,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:52,247 INFO L130 PetriNetUnfolder]: 180/497 cut-off events. [2022-11-23 01:59:52,247 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-23 01:59:52,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 497 events. 180/497 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2374 event pairs, 31 based on Foata normal form. 44/493 useless extension candidates. Maximal degree in co-relation 1469. Up to 160 conditions per place. [2022-11-23 01:59:52,251 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 94 selfloop transitions, 22 changer transitions 0/116 dead transitions. [2022-11-23 01:59:52,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 116 transitions, 687 flow [2022-11-23 01:59:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:59:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 01:59:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1057 transitions. [2022-11-23 01:59:52,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.527972027972028 [2022-11-23 01:59:52,255 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1057 transitions. [2022-11-23 01:59:52,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1057 transitions. [2022-11-23 01:59:52,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:52,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1057 transitions. [2022-11-23 01:59:52,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 96.0909090909091) internal successors, (1057), 11 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 182.0) internal successors, (2184), 12 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,263 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 182.0) internal successors, (2184), 12 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,263 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 127 flow. Second operand 11 states and 1057 transitions. [2022-11-23 01:59:52,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 116 transitions, 687 flow [2022-11-23 01:59:52,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 116 transitions, 683 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 01:59:52,267 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 311 flow [2022-11-23 01:59:52,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=311, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2022-11-23 01:59:52,268 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2022-11-23 01:59:52,268 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 311 flow [2022-11-23 01:59:52,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:52,269 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 01:59:52,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:52,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:52,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash -33156195, now seen corresponding path program 1 times [2022-11-23 01:59:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:52,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026425342] [2022-11-23 01:59:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:52,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:52,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026425342] [2022-11-23 01:59:52,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026425342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:52,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:52,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676328457] [2022-11-23 01:59:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:52,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2022-11-23 01:59:52,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:52,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2022-11-23 01:59:52,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:52,672 INFO L130 PetriNetUnfolder]: 144/415 cut-off events. [2022-11-23 01:59:52,673 INFO L131 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2022-11-23 01:59:52,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 415 events. 144/415 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2013 event pairs, 47 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1466. Up to 354 conditions per place. [2022-11-23 01:59:52,676 INFO L137 encePairwiseOnDemand]: 180/182 looper letters, 39 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-11-23 01:59:52,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 419 flow [2022-11-23 01:59:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2022-11-23 01:59:52,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567765567765568 [2022-11-23 01:59:52,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2022-11-23 01:59:52,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2022-11-23 01:59:52,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:52,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2022-11-23 01:59:52,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,681 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 311 flow. Second operand 3 states and 304 transitions. [2022-11-23 01:59:52,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 419 flow [2022-11-23 01:59:52,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 390 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-23 01:59:52,689 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 279 flow [2022-11-23 01:59:52,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2022-11-23 01:59:52,690 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2022-11-23 01:59:52,690 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 279 flow [2022-11-23 01:59:52,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:52,691 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 01:59:52,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:59:52,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -33156194, now seen corresponding path program 1 times [2022-11-23 01:59:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:52,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456265833] [2022-11-23 01:59:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:59:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:52,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456265833] [2022-11-23 01:59:52,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456265833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:52,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:52,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197938579] [2022-11-23 01:59:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:52,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-11-23 01:59:52,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:52,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-11-23 01:59:52,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:52,838 INFO L130 PetriNetUnfolder]: 134/381 cut-off events. [2022-11-23 01:59:52,838 INFO L131 PetriNetUnfolder]: For 601/601 co-relation queries the response was YES. [2022-11-23 01:59:52,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 381 events. 134/381 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1816 event pairs, 40 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1330. Up to 198 conditions per place. [2022-11-23 01:59:52,841 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 36 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2022-11-23 01:59:52,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 390 flow [2022-11-23 01:59:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2022-11-23 01:59:52,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2022-11-23 01:59:52,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2022-11-23 01:59:52,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2022-11-23 01:59:52,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:52,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2022-11-23 01:59:52,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,847 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 279 flow. Second operand 3 states and 301 transitions. [2022-11-23 01:59:52,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 390 flow [2022-11-23 01:59:52,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:52,852 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 290 flow [2022-11-23 01:59:52,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2022-11-23 01:59:52,856 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 26 predicate places. [2022-11-23 01:59:52,858 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 290 flow [2022-11-23 01:59:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:52,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:52,859 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 01:59:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:59:52,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1739861292, now seen corresponding path program 1 times [2022-11-23 01:59:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177453753] [2022-11-23 01:59:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:52,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:52,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177453753] [2022-11-23 01:59:52,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177453753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:52,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934830737] [2022-11-23 01:59:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:52,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:52,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:52,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:52,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:59:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:53,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:59:53,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:53,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:59:53,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934830737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:53,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:59:53,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 01:59:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773214705] [2022-11-23 01:59:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:59:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:59:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:59:53,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-11-23 01:59:53,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:53,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-11-23 01:59:53,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:53,174 INFO L130 PetriNetUnfolder]: 126/366 cut-off events. [2022-11-23 01:59:53,174 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-11-23 01:59:53,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 366 events. 126/366 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1625 event pairs, 25 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1382. Up to 232 conditions per place. [2022-11-23 01:59:53,178 INFO L137 encePairwiseOnDemand]: 179/182 looper letters, 55 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-11-23 01:59:53,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 585 flow [2022-11-23 01:59:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:59:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 01:59:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2022-11-23 01:59:53,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5508241758241759 [2022-11-23 01:59:53,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2022-11-23 01:59:53,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2022-11-23 01:59:53,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:53,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2022-11-23 01:59:53,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,184 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,184 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 290 flow. Second operand 4 states and 401 transitions. [2022-11-23 01:59:53,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 585 flow [2022-11-23 01:59:53,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:53,190 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 285 flow [2022-11-23 01:59:53,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2022-11-23 01:59:53,193 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2022-11-23 01:59:53,193 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 285 flow [2022-11-23 01:59:53,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:53,194 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 01:59:53,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:53,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 01:59:53,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1739861291, now seen corresponding path program 1 times [2022-11-23 01:59:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:53,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290257979] [2022-11-23 01:59:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:59:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290257979] [2022-11-23 01:59:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290257979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:59:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:59:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:59:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542192010] [2022-11-23 01:59:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:59:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:59:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:59:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:59:53,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 182 [2022-11-23 01:59:53,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:53,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 182 [2022-11-23 01:59:53,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:53,534 INFO L130 PetriNetUnfolder]: 112/323 cut-off events. [2022-11-23 01:59:53,534 INFO L131 PetriNetUnfolder]: For 732/732 co-relation queries the response was YES. [2022-11-23 01:59:53,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 323 events. 112/323 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1369 event pairs, 38 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 1178. Up to 156 conditions per place. [2022-11-23 01:59:53,538 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 40 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2022-11-23 01:59:53,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 463 flow [2022-11-23 01:59:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:59:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:59:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2022-11-23 01:59:53,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5421245421245421 [2022-11-23 01:59:53,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2022-11-23 01:59:53,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2022-11-23 01:59:53,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:53,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2022-11-23 01:59:53,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,544 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 285 flow. Second operand 3 states and 296 transitions. [2022-11-23 01:59:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 463 flow [2022-11-23 01:59:53,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 01:59:53,550 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 294 flow [2022-11-23 01:59:53,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2022-11-23 01:59:53,551 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2022-11-23 01:59:53,554 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 294 flow [2022-11-23 01:59:53,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:53,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:53,557 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2022-11-23 01:59:53,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 01:59:53,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:53,558 INFO L85 PathProgramCache]: Analyzing trace with hash -733248801, now seen corresponding path program 2 times [2022-11-23 01:59:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:53,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427893675] [2022-11-23 01:59:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:53,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:53,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427893675] [2022-11-23 01:59:53,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427893675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:53,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289608910] [2022-11-23 01:59:53,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:59:53,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:53,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:53,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:59:53,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:59:53,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:53,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 01:59:53,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:53,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:54,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289608910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:54,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:54,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-23 01:59:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049139135] [2022-11-23 01:59:54,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:54,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 01:59:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:54,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 01:59:54,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-23 01:59:54,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-11-23 01:59:54,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 87.22222222222223) internal successors, (1570), 18 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:54,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:54,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-11-23 01:59:54,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:59:55,281 INFO L130 PetriNetUnfolder]: 458/1169 cut-off events. [2022-11-23 01:59:55,281 INFO L131 PetriNetUnfolder]: For 4113/4113 co-relation queries the response was YES. [2022-11-23 01:59:55,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 1169 events. 458/1169 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5753 event pairs, 80 based on Foata normal form. 112/1281 useless extension candidates. Maximal degree in co-relation 4493. Up to 252 conditions per place. [2022-11-23 01:59:55,290 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 302 selfloop transitions, 83 changer transitions 0/385 dead transitions. [2022-11-23 01:59:55,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 385 transitions, 3061 flow [2022-11-23 01:59:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-23 01:59:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-23 01:59:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3721 transitions. [2022-11-23 01:59:55,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5242321780783319 [2022-11-23 01:59:55,300 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3721 transitions. [2022-11-23 01:59:55,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3721 transitions. [2022-11-23 01:59:55,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:59:55,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3721 transitions. [2022-11-23 01:59:55,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 95.41025641025641) internal successors, (3721), 39 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:55,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 182.0) internal successors, (7280), 40 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:55,323 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 182.0) internal successors, (7280), 40 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:55,324 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 294 flow. Second operand 39 states and 3721 transitions. [2022-11-23 01:59:55,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 385 transitions, 3061 flow [2022-11-23 01:59:55,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 385 transitions, 2981 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:59:55,340 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 1181 flow [2022-11-23 01:59:55,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1181, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2022-11-23 01:59:55,341 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 94 predicate places. [2022-11-23 01:59:55,341 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 1181 flow [2022-11-23 01:59:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.22222222222223) internal successors, (1570), 18 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:55,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:59:55,342 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2022-11-23 01:59:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 01:59:55,548 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 01:59:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 923029411, now seen corresponding path program 3 times [2022-11-23 01:59:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115650102] [2022-11-23 01:59:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:56,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:56,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115650102] [2022-11-23 01:59:56,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115650102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:56,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871657310] [2022-11-23 01:59:56,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 01:59:56,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:56,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:56,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:56,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 01:59:56,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-23 01:59:56,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:56,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 01:59:56,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:56,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:59:56,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871657310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:56,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:56,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-23 01:59:56,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778958826] [2022-11-23 01:59:56,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:56,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 01:59:56,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 01:59:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 01:59:56,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-11-23 01:59:56,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 1181 flow. Second operand has 34 states, 34 states have (on average 87.11764705882354) internal successors, (2962), 34 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:59:56,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:59:56,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-11-23 01:59:56,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:00:02,583 INFO L130 PetriNetUnfolder]: 1744/4443 cut-off events. [2022-11-23 02:00:02,583 INFO L131 PetriNetUnfolder]: For 137981/137981 co-relation queries the response was YES. [2022-11-23 02:00:02,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19343 conditions, 4443 events. 1744/4443 cut-off events. For 137981/137981 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 27354 event pairs, 253 based on Foata normal form. 480/4923 useless extension candidates. Maximal degree in co-relation 19286. Up to 1062 conditions per place. [2022-11-23 02:00:02,630 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 1092 selfloop transitions, 348 changer transitions 0/1440 dead transitions. [2022-11-23 02:00:02,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 1440 transitions, 13694 flow [2022-11-23 02:00:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-23 02:00:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2022-11-23 02:00:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 13665 transitions. [2022-11-23 02:00:02,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5250518712057174 [2022-11-23 02:00:02,664 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 13665 transitions. [2022-11-23 02:00:02,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 13665 transitions. [2022-11-23 02:00:02,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:00:02,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 13665 transitions. [2022-11-23 02:00:02,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 95.55944055944056) internal successors, (13665), 143 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:02,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 182.0) internal successors, (26208), 144 states have internal predecessors, (26208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:02,766 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 182.0) internal successors, (26208), 144 states have internal predecessors, (26208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:02,767 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 1181 flow. Second operand 143 states and 13665 transitions. [2022-11-23 02:00:02,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 1440 transitions, 13694 flow [2022-11-23 02:00:03,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1440 transitions, 13481 flow, removed 99 selfloop flow, removed 5 redundant places. [2022-11-23 02:00:03,083 INFO L231 Difference]: Finished difference. Result has 365 places, 389 transitions, 5608 flow [2022-11-23 02:00:03,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=5608, PETRI_PLACES=365, PETRI_TRANSITIONS=389} [2022-11-23 02:00:03,084 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 340 predicate places. [2022-11-23 02:00:03,084 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 389 transitions, 5608 flow [2022-11-23 02:00:03,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 87.11764705882354) internal successors, (2962), 34 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:03,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:00:03,086 INFO L209 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2022-11-23 02:00:03,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:00:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 02:00:03,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 02:00:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:03,294 INFO L85 PathProgramCache]: Analyzing trace with hash 241684779, now seen corresponding path program 4 times [2022-11-23 02:00:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:03,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120686200] [2022-11-23 02:00:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:03,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:00:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:05,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120686200] [2022-11-23 02:00:05,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120686200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:00:05,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571123802] [2022-11-23 02:00:05,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:00:05,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:00:05,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:00:05,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:00:05,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:00:05,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:00:05,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:00:05,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 02:00:05,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:00:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:00:05,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:00:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:00:06,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571123802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:00:06,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:00:06,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 64 [2022-11-23 02:00:06,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730056803] [2022-11-23 02:00:06,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:00:06,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-23 02:00:06,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:06,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-23 02:00:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2022-11-23 02:00:06,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-11-23 02:00:06,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 389 transitions, 5608 flow. Second operand has 66 states, 66 states have (on average 87.06060606060606) internal successors, (5746), 66 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:06,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:00:06,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-11-23 02:00:06,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:00:56,271 INFO L130 PetriNetUnfolder]: 7076/18039 cut-off events. [2022-11-23 02:00:56,272 INFO L131 PetriNetUnfolder]: For 8919223/8919223 co-relation queries the response was YES. [2022-11-23 02:00:56,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92559 conditions, 18039 events. 7076/18039 cut-off events. For 8919223/8919223 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 135061 event pairs, 908 based on Foata normal form. 2112/20151 useless extension candidates. Maximal degree in co-relation 92392. Up to 4520 conditions per place. [2022-11-23 02:00:56,661 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 4114 selfloop transitions, 1493 changer transitions 0/5607 dead transitions. [2022-11-23 02:00:56,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 5607 transitions, 66939 flow [2022-11-23 02:00:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2022-11-23 02:00:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2022-11-23 02:00:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 51889 transitions. [2022-11-23 02:00:56,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5250541355513731 [2022-11-23 02:00:56,745 INFO L72 ComplementDD]: Start complementDD. Operand 543 states and 51889 transitions. [2022-11-23 02:00:56,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 543 states and 51889 transitions. [2022-11-23 02:00:56,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:00:56,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 543 states and 51889 transitions. [2022-11-23 02:00:56,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 544 states, 543 states have (on average 95.55985267034991) internal successors, (51889), 543 states have internal predecessors, (51889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:56,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 544 states, 544 states have (on average 182.0) internal successors, (99008), 544 states have internal predecessors, (99008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:56,982 INFO L81 ComplementDD]: Finished complementDD. Result has 544 states, 544 states have (on average 182.0) internal successors, (99008), 544 states have internal predecessors, (99008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:56,982 INFO L175 Difference]: Start difference. First operand has 365 places, 389 transitions, 5608 flow. Second operand 543 states and 51889 transitions. [2022-11-23 02:00:56,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 5607 transitions, 66939 flow [2022-11-23 02:01:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 5607 transitions, 66144 flow, removed 361 selfloop flow, removed 22 redundant places. [2022-11-23 02:01:11,821 INFO L231 Difference]: Finished difference. Result has 1298 places, 1566 transitions, 28535 flow [2022-11-23 02:01:11,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=543, PETRI_FLOW=28535, PETRI_PLACES=1298, PETRI_TRANSITIONS=1566} [2022-11-23 02:01:11,823 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 1273 predicate places. [2022-11-23 02:01:11,823 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1566 transitions, 28535 flow [2022-11-23 02:01:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 87.06060606060606) internal successors, (5746), 66 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:11,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:01:11,824 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2022-11-23 02:01:11,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-23 02:01:12,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:12,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-23 02:01:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 850818107, now seen corresponding path program 5 times [2022-11-23 02:01:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:12,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198045623] [2022-11-23 02:01:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:12,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:17,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198045623] [2022-11-23 02:01:17,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198045623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:17,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143184209] [2022-11-23 02:01:17,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:01:17,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:17,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:17,015 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:17,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a227c82-822f-416b-aa3c-c8ac9fc25615/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:01:17,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-23 02:01:17,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:01:17,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 02:01:17,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:01:19,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:01:19,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143184209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:19,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:01:19,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2022-11-23 02:01:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725654493] [2022-11-23 02:01:19,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:19,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 02:01:19,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 02:01:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2022-11-23 02:01:19,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-11-23 02:01:19,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1298 places, 1566 transitions, 28535 flow. Second operand has 33 states, 33 states have (on average 95.9090909090909) internal successors, (3165), 33 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:19,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:01:19,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-11-23 02:01:19,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand